**** BEGIN LOGGING AT Mon Jul 18 23:59:57 2005
**** BEGIN LOGGING AT Tue Jul 19 05:08:40 2005
Jul 19 05:39:39 <prpplague> ~seen beewoolie
Jul 19 05:39:39 <purl> beewoolie <~beewoolie@florence.buici.com> was last seen on IRC in channel #openjtag, 43d 19h 55m 35s ago, saying: 'jacques: ping.'.
Jul 19 05:39:47 <prpplague> ~seen beewoolie_afk
Jul 19 05:39:47 <purl> i haven't seen 'beewoolie_afk', prpplague
Jul 19 05:39:53 <prpplague> ~seen beewoolie_away
Jul 19 05:39:54 <purl> i haven't seen 'beewoolie_away', prpplague
Jul 19 05:43:09 <[g2]> prpplague, he was here yesterday
Jul 19 05:43:30 <prpplague> [g2]: ahh ok
Jul 19 05:43:32 <prpplague> [g2]: thanks
Jul 19 10:01:35 <prpplague> beewoolie-afk: das bee is in the house
Jul 19 10:02:21 <beewoolie-afk> yo yo yo
Jul 19 10:02:40 <prpplague> beewoolie-afk: question, in your 2.4 release of for the 79520, did you make any changes to the linux/arch/arm/boot/compressed/head.S ?
Jul 19 10:02:41 <beewoolie-afk> Do you have much experience with LCD panels?
Jul 19 10:02:58 <beewoolie-afk> I don't think I changed anything.
Jul 19 10:03:02 <beewoolie-afk> Why?
Jul 19 10:03:21 <prpplague> beewoolie-afk: i have some experience
Jul 19 10:03:30 <beewoolie-afk> OK.  One thing at a time.
Jul 19 10:03:37 <prpplague> beewoolie-afk: because the cache isn't being enabled
Jul 19 10:03:37 <beewoolie-afk> What's up with head.S?
Jul 19 10:03:47 <beewoolie-afk> Oh.  That would be bad.
Jul 19 10:03:57 <prpplague> beewoolie-afk: lineo's code doesn't enable the armv4 cache
Jul 19 10:03:57 <beewoolie-afk> Do you think that Lineo did that?
Jul 19 10:04:03 <prpplague> beewoolie-afk: yea
Jul 19 10:04:05 <beewoolie-afk> That is really wierd.
Jul 19 10:04:24 <beewoolie-afk> Without cache, it would run really sucky.
Jul 19 10:04:27 <prpplague> beewoolie-afk: yea
Jul 19 10:04:51 <beewoolie-afk> Honestly, I've not spent much time with the 2.4 port.
Jul 19 10:04:57 <beewoolie-afk> I added it to my BSP just because I could.
Jul 19 10:05:08 <beewoolie-afk> I might look at it again when I get back to the 79520.
Jul 19 10:05:23 <beewoolie-afk> Sharp wants me to finish up the 79520 port for 2.6.
Jul 19 10:05:24 <prpplague> beewoolie-afk: ok, might want to double check the 2.6 then and make sure you are getting the i and d caches enabled
Jul 19 10:05:34 <beewoolie-afk> I'll probably fold in the 2.4 stuff just to make it easy on people.
Jul 19 10:05:36 <prpplague> beewoolie-afk: yea, i spoke to Bob Shear about that
Jul 19 10:05:49 <beewoolie-afk> I'll check the caches.
Jul 19 10:05:52 <prpplague> beewoolie-afk: hehe, told him you were doing a good hob
Jul 19 10:05:53 <prpplague> job
Jul 19 10:05:56 <beewoolie-afk> Does the /proc/cpuinfo show that caches are disabled.
Jul 19 10:06:07 <beewoolie-afk> Thanks for the kind words.
Jul 19 10:06:16 <beewoolie-afk>  ?
Jul 19 10:06:40 <prpplague> beewoolie-afk: the 2.4 kernel doesn't display cache info for the cpu in /proc/cpuinfo
Jul 19 10:06:52 <beewoolie-afk> Hmm.
Jul 19 10:07:02 <beewoolie-afk> it is easy enough to read the CP15 register
Jul 19 10:07:08 <prpplague> beewoolie-afk: yea
Jul 19 10:07:22 <prpplague> beewoolie-afk: i was planning to add some status info tomorrow
Jul 19 10:08:07 <prpplague> beewoolie-afk: got a custom lcd issue?
Jul 19 10:08:10 <beewoolie-afk> bbiaw, it's breakfast time.
Jul 19 10:08:18 <prpplague> beewoolie-afk: np, i'll be here
Jul 19 10:28:58 <[g2]> late breakfast :)
Jul 19 12:30:25 <beewoolie-afk> ~praise [g2] 
Jul 19 12:30:25 <purl> All hail [g2]!
Jul 19 12:30:38 <beewoolie-afk> that was fun.  let's do it again
Jul 19 12:30:52 <beewoolie-afk> ~praise [g2]
Jul 19 12:30:52 <purl> All hail [g2]!
Jul 19 12:31:33 <[g2]> why's that ?
Jul 19 12:31:51 <[g2]> beewoolie-afk's is in a good mood today :)
Jul 19 12:32:05 <beewoolie-afk> hey, it's dollface and i like the praise option
Jul 19 12:32:15 <[g2]> musta been a goog breakfast
Jul 19 12:32:30 <beewoolie-afk> but i'm not really geeky enough to have my own name on this chat site
Jul 19 12:32:37 <[g2]> cool.. give dollface a hug and kiss
Jul 19 12:32:59 <beewoolie-afk> breakfast was ok but the praise option is more interesting
Jul 19 12:33:12 <beewoolie-afk> now i'll praise beewoolie
Jul 19 12:33:15 <[g2]> ~praise beewoolie-afk 
Jul 19 12:33:15 <purl> All hail beewoolie-afk!
Jul 19 12:33:24 <beewoolie-afk> ~praise beewoolie-afk 
Jul 19 12:33:25 <purl> All hail beewoolie-afk!
Jul 19 12:33:29 <beewoolie-afk> yeah!
Jul 19 12:33:41 <[g2]> ~karma beewoolie-afk 
Jul 19 12:33:41 <purl> beewoolie-afk has neutral karma
Jul 19 12:33:48 <[g2]> ~karma beewoolie-afk 1
Jul 19 12:33:48 <purl> beewoolie-afk 1 has neutral karma
Jul 19 12:33:55 <[g2]> doh!
Jul 19 12:33:59 <[g2]> ~help
Jul 19 12:34:00 <beewoolie-afk> maybe one day i'll be a computer geek too  chatting is fun
Jul 19 12:34:40 <beewoolie-afk> ~karma [g2]
Jul 19 12:34:40 <purl> [g2] has karma of 1
Jul 19 12:34:59 <beewoolie-afk> bye [g2]
Jul 19 12:35:12 <[g2]> bye
Jul 19 12:48:07 <beewoolie-afk> [g2]: I told the story of us de-underclocking the slug to dollface and a few others.
Jul 19 12:48:20 <[g2]> cool
Jul 19 12:48:24 <beewoolie-afk> They especially like the bot's praise feature
Jul 19 12:49:00 <beewoolie-afk> Did I hear right that jbowler found a solution to the shutdown problem?
Jul 19 12:49:58 <prpplague> beewoolie-afk: ho ho ho
Jul 19 12:50:04 <prpplague> beewoolie-afk: did you have a lcd question?
Jul 19 12:50:24 <beewoolie-afk> Yeah.  
Jul 19 12:50:49 <beewoolie-afk> I have a panel that looks right, but some of the red pels flicker, and only sometimes
Jul 19 12:50:54 <beewoolie-afk> Do you know what can cause this?
Jul 19 12:51:57 <prpplague> beewoolie-afk: just red?
Jul 19 12:52:32 <beewoolie-afk> Seems like it.  It behaves very strangely in particular circumstances.  For example, when i draw a gray line in the first column, the gree pels don't light.
Jul 19 12:52:35 <ByronT> drugs!
Jul 19 12:52:37 <prpplague> beewoolie-afk: what type of display stn or tft?
Jul 19 12:52:43 <beewoolie-afk> tft
Jul 19 12:53:09 <prpplague> beewoolie-afk: you using 555 or 565 or 666?
Jul 19 12:53:41 <prpplague> beewoolie-afk: this on a pl110 controler?
Jul 19 12:54:15 <beewoolie-afk> This is a pl110.  Ithink it's 555, but I cannot be sure.  I haven't been able to determine how I know one way or the other.
Jul 19 12:54:31 <beewoolie-afk> The panel supports six bits per color.
Jul 19 12:55:17 <prpplague> beewoolie-afk: is it a sharp panel?
Jul 19 12:55:29 <beewoolie-afk> Yeah.  It's the 5.7" that LPD sells.
Jul 19 12:55:46 <beewoolie-afk> I have the datasheet, but I haven't studied it much.  I just wondered if this might be a timing issue.
Jul 19 12:56:06 <beewoolie-afk> I've toyed with the parameters a bunch.  It's really resilient to changes in the porches.
Jul 19 12:56:10 <prpplague> beewoolie-afk: ahh, yea, its gonna probably be a problem between the pallet and timing
Jul 19 12:56:27 <prpplague> beewoolie-afk: yea, you really need a scope to do lcd work
Jul 19 12:56:34 <beewoolie-afk> The only one that seems to make a difference is the vertical front porch because it determines where the first line appears.
Jul 19 12:56:37 <beewoolie-afk> I have a scope.
Jul 19 12:56:55 <beewoolie-afk> there is no palette because this is a direct-mapped mode.
Jul 19 12:56:56 <prpplague> beewoolie-afk: you can use devmem2 to tweak the values and do some testing from command line
Jul 19 12:57:18 <beewoolie-afk> What is devmem2?
Jul 19 12:58:45 <beewoolie-afk> I'll just take some time and make sure I've got all of the timing right.  As far as I can tell, there isn't much I can control.
Jul 19 12:58:57 <prpplague> beewoolie-afk: http://www.lart.tudelft.nl/lartware/port/
Jul 19 12:59:04 <prpplague> beewoolie-afk: look at the bottom of the page
Jul 19 12:59:21 <prpplague> beewoolie-afk: no, the pl110 is pretty flexible
Jul 19 12:59:37 <beewoolie-afk> Well, I have jtag, so it isn't necessary.
Jul 19 12:59:54 <prpplague> beewoolie-afk: the 3 lcd's we've done with the pl110, we hooked up an oscope and used devmem2 to tweak values
Jul 19 12:59:58 <beewoolie-afk> The controller is flexible, but the panel seems to not care much about the parameters.
Jul 19 13:00:09 <prpplague> beewoolie-afk: yea, jtag will do it 
Jul 19 13:00:17 <prpplague> beewoolie-afk: you'd be surprised
Jul 19 13:00:30 <beewoolie-afk> In fact, I usually use APEX since I can do it all from one place.
Jul 19 13:00:35 <prpplague> beewoolie-afk: i'll grab the datasheet and ahve a look this evening
Jul 19 13:00:48 <beewoolie-afk> Well, I've been pushing things around and nothing much changes the output.
Jul 19 13:01:31 <prpplague> beewoolie-afk: yea, i found that to be true as well
Jul 19 13:02:11 <beewoolie-afk> What about the frequency.  If I slow down the pel clock, is there really any cost except for the fact that the display updates a little slower?
Jul 19 13:02:19 <beewoolie-afk> Will all of the colors be the same?
Jul 19 13:02:48 <prpplague> beewoolie-afk: i'd have to look at the datasheet, the lcd timings are very tricky
Jul 19 13:02:57 <prpplague> beewoolie-afk: i'll grab it now
Jul 19 13:03:36 <beewoolie-afk> I'd think so, but that doesn't seem to be the case.
Jul 19 13:03:56 <beewoolie-afk> http://www.sharpsma.com/part.php?PartID=631
Jul 19 13:05:28 <prpplague> ahh thanks
Jul 19 13:06:57 <beewoolie-afk> Looks like the panel clock can be 25MHz.  I think I've got is set much lower.
Jul 19 13:07:06 <beewoolie-afk> Perhaps that's why is looks so wierd.
Jul 19 13:07:12 <beewoolie-afk> In fact, it kinda makes sense.
Jul 19 13:07:41 <beewoolie-afk> If a pel is set for 10% of full intensity and the clock frequency is too low, I would expect it to flicker.
Jul 19 13:10:24 <prpplague> one sec on the phone with the boss
Jul 19 13:13:02 <prpplague> beewoolie-afk: yea its 555
Jul 19 13:13:17 <prpplague> beewoolie-afk: printing now to have a look
Jul 19 13:13:17 <beewoolie-afk> Where did you see that?
Jul 19 13:13:49 <prpplague> beewoolie-afk: hehe, its listed in the old lineo patch as a 555
Jul 19 13:13:56 <prpplague> beewoolie-afk: one sec and i'll check the docs
Jul 19 13:14:46 <beewoolie-afk> Odd.  I looked in the Lineo patch and didn't see it.  But I was looking in the 7a404 implementation and not the 79520.
Jul 19 13:15:43 <prpplague> beewoolie-afk: pl110-fb.c has the lq57 listing
Jul 19 13:15:48 <prpplague> beewoolie-afk: which is the same
Jul 19 13:16:19 <prpplague> beewoolie-afk: hmm the data sheet seems to look like it should be 666
Jul 19 13:17:15 <beewoolie-afk> Yeah, but that isn't possible with the pl110
Jul 19 13:17:24 <beewoolie-afk> I'd need 24 bit color.
Jul 19 13:18:16 <prpplague> beewoolie-afk: right, but you can fake it with a 555 signal
Jul 19 13:18:24 <prpplague> beewoolie-afk: but you have to compensate for that
Jul 19 13:18:32 <beewoolie-afk> How is that?
Jul 19 13:18:43 <beewoolie-afk> I think it depends on the wiring.
Jul 19 13:19:03 <beewoolie-afk> If we wire the MS five bits, then we just lose one bit of color resolution.
Jul 19 13:19:30 <prpplague> yea you could do that as well
Jul 19 13:20:17 <prpplague> but you still have to have a clock cycle to account for the missing data
Jul 19 13:22:35 <beewoolie-afk> Hmm.  Why?  If it takes all six bits at one time, there is no difference in timing.
Jul 19 13:23:00 <prpplague> beewoolie-afk: duh sorry, wasn't thinking straight
Jul 19 13:23:08 <beewoolie-afk> Is that the STN way?
Jul 19 13:24:36 <prpplague> beewoolie-afk: one sec, i think i have the code for the logicpd we did our initial test with
Jul 19 13:25:39 <prpplague> beewoolie-afk: is the 6th color bit tied low?
Jul 19 13:25:47 <prpplague> beewoolie-afk: or is it floating?
Jul 19 13:31:53 <beewoolie-afk> It will take some time to check on that.
Jul 19 13:38:19 <beewoolie-afk> I think I've got the frequency wrong.  It looks like the frequency is 25MHz for VGA and 7MHz for QVGA.
Jul 19 13:38:28 <beewoolie-afk> In other words, I think it is already correct.
**** ENDING LOGGING AT Tue Jul 19 23:59:56 2005